Micro Quadcopter 105mm 110mm FPV Scisky

thingiverse

This is another variation of a 105mm or 110mm FPV quad for a Scisky v1.2 flight controller. The Micro 105 FPV Quadcopter - 8.5mm Motors, Micro Scisky by Punkkills and Micro 105-remix for HYPERION MINI FPV CAMERA by lpoc78 are declared as remix sources to provide credit to design influences. No digital source was actually used from either design. A heavily commented openSCAD source script is provided to enable user tailoring. The baseline design leverages the following key components - 8.5mm x 20mm brushed motors (Racerstar, Sidewinder, etc.) 55 or 56mm props like those for Walkera QR Ladybird FX797T or Hyperion MiniCam Camera and VTX All-In-One Scisky v1.2 flight controller with DSMX receiver, updated to Cleanflight v1.14.2 Pololu U3V12F5 5v regulator for AIO power Turnigy NanoTech 500mAh 1S battery I used the DSM2/DSMX version of the Scisky v1.2 board that is commonly available. The Scisky v2.1 boards with STM32 F3 processors also fit. The v1.2 and v2.1 boards have two rows of pads and a single connector that are meant for use in an overskyrc VTX solution. Compatibility with the older style Scisky with UART and II2C connectors is unknown - the possible issue is whether there are components on the bottom side of the earlier boards that interfere with the board supports in the tray. The F3 version of the board, as well as variations with Devo, Futaba, Frysky, Flysky and Hubsan compatible receivers are available from http://www.overskyrc.com/. There have been problems with the 5V regulator on the original Scisky boards handling the VTX load, so I used a standalone Pololu 5V regulator like many have. I've noticed the F3 version of the new Scisky is described at OverskyRC has having a 1-amp 5V output instead of 500mAh. Maybe the F3 boards have a new regulator design that reduces the need for the Pololu. The frame design leverages three-dimensional sweeping arcs intended to provide a compromise between strength and weight. The Scisky flight controller mounts to a small tray that is vibration isolated from the frame. The battery shelf is designed to be removable for easy access. Print Settings Printer: MakerFarm i3v Rafts: No Supports: No Infill: Worry more about perimeters and slicer gap fill settings - there is very little infill volume Notes: Test prints of the frame were printed on a MakerFarm i3v variation of a Prusa i3 with a 0.40mm nozzle, using Simplify 3D as the slicer. Simplify3D was set for 0.20mm layer height, auto extrusion width, 30% triangular infill, 2 solid top and bottom layers, and 3 perimeters printed outside-in. Print the test plate first for fit checking mounting screws for the battery plate, the rollbar (optional), and a motor. See the test_plate module in the openSCAD script for suggestions on what to look for in the fit check, and for hints on what parameters to adjust if something doesn't fit. Post-Printing I coated the inside of the motor mount holes with liquid electrical tape to provide improved grip on the motors. The battery shelf is also coated with liquid electrical tape to provide the battery with a nonslip surface. Following an idea from the Oscar Liang blog, subminiature zip ties have been added to the motor mounts to help them retain long-term shape with motor heating. Self-adhesive felt pads were added for protection under each motor. Combinations of dental bands and hair bands are used for battery and AIO mounting. Narrow strips of 3M VHB (Very High Bond) tape were used on the bottom of the FC tray. Wires were dressed along the frame using dental floss threaded through small holes drilled into the frame ridge. For information on the frame evolution or information on a quad build using this frame, see the forum thread at http://intofpv.com/t/first-fpv-quad-build.